"Ratings are earned through \"A\" schools, which are attended before deployment and after undergoing initial basic training at Recruit Training Command, Great Lakes, Illinois. Some members may undergo additional training in a \"C\" school either before or after a tour of duty. Upon completion, they are assigned a four-digit Navy Enlisted Classification (NEC) code, which identifies a skill that is outside of their standard rating. An example is NEC 2780, which shows that the sailor is qualified as a Network Security Vulnerability Technician. The rating symbols depicted for each rating badge listed below (except for the rating badge of the Command Master Chief) is Boatswain's Mate."@en . . . . "List of United States Navy enlisted rates"@en . . . . . "Ratings are earned through \"A\" schools, which are attended before deployment and after undergoing initial basic training at Recruit Training Command, Great Lakes, Illinois. Some members may undergo additional training in a \"C\" school either before or after a tour of duty. Upon completion, they are assigned a four-digit Navy Enlisted Classification (NEC) code, which identifies a skill that is outside of their standard rating. An example is NEC 2780, which shows that the sailor is qualified as a Network Security Vulnerability Technician."@en . . . . .